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    <title>Document</title>
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  <style>
    .row > div {
      height: 50px;
      background-color: pink;
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  <body>
    <div class="container">
      <div class="row">
        <div class="col-md-4 col-md-push-8">左侧</div>
        <div class="col-md-8 col-md-pull-4">右侧</div>
      </div>
    </div>
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